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ZDNet / News / Security

Viruses now penetrating deeper

By Victoria Ho , ZDNet Asia on May 13, 2009 

 

Summary

update New malware variants have taken researchers by surprise by penetrating deeper into systems to avoid detection, says Kaspersky Lab.

Topics

technology, science and technology, konstantin sapronov, computer technology, computer security, viruses and worms, antivirus software, software, security software, spyware and adware

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Echelon 2012
June 11 and 12, 2012

University Cultural Centre, National University of Singapore

Startup Asia Jakarta 2012
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12th Floor, Annex Building, Wisma Nusantara Complex, Jl. M.H. Thamrin No. 59 Jakarta 10350, Indonesia

MMA Forum Singapore
April 23-25, 2012

Grand Hyatt Singapore

Submit

update New malware variants have taken researchers by surprise by adapting new "stealth" methods to penetrate systems deeper so as to avoid detection, according to Kaspersky Lab.

The antivirus company said in a video conference Wednesday, a new variant of botnet, Sinowal--also known as Torpig--marks the first time cybercriminals have used such sophisticated methods.

Kaspersky said Sinowal writes itself to the user's hard drive master boot record (MBR), the operating system's lowest level, and has been successful in avoiding detection by antivirus products.

It said the worm has has over the last month been actively spreading through a number of methods including Web sites exploiting the Neosploit rootkit and a vulnerability in PDF software, Adobe Acrobat Reader.

Konstantin Sapronov, head, virus lab, China, Kaspersky, said new methods of infiltration have also rendered it nearly impossible for users to avoid infection, even if they are careful. Seemingly clean sites can also perform backend redirection to malware-ridden sites.

Sapronov said Web malware authors have favored redirection exploits on Web apps and search fields, like iFrame attacks during 2008, compared to 2007 which saw more Trojan horses and droppers being used.

The Web has also overtaken e-mail as the top transport medium for viruses, with the number of infected sites growing 300 percent in 2008, he said.

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